 /*******************************************************************************
  * Copyright (c) 2006, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.internal.ide.handlers;

 import org.eclipse.core.commands.AbstractHandler;
 import org.eclipse.core.commands.ExecutionEvent;
 import org.eclipse.core.commands.ExecutionException;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.ui.IPageLayout;
 import org.eclipse.ui.IViewPart;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.PartInitException;
 import org.eclipse.ui.handlers.HandlerUtil;
 import org.eclipse.ui.part.ISetSelectionTarget;

 /**
  * A command handler to show a resource in the Navigator view given the resource
  * path.
  *
  * @since 3.2
  */
 public class ShowResourceByPathHandler extends AbstractHandler {

     private static final String PARAM_ID_RESOURCE_PATH = "resourcePath"; //$NON-NLS-1$

     public Object execute(ExecutionEvent event) throws ExecutionException {

         IResource resource = (IResource) event
                 .getObjectParameterForExecution(PARAM_ID_RESOURCE_PATH);

         IWorkbenchWindow activeWindow = HandlerUtil
                 .getActiveWorkbenchWindowChecked(event);

         IWorkbenchPage activePage = activeWindow.getActivePage();
         if (activePage == null) {
             throw new ExecutionException("no active workbench page"); //$NON-NLS-1$
 }

         try {
             IViewPart view = activePage.showView(IPageLayout.ID_RES_NAV);
             if (view instanceof ISetSelectionTarget) {
                 ISelection selection = new StructuredSelection(resource);
                 ((ISetSelectionTarget) view).selectReveal(selection);
             }
         } catch (PartInitException e) {
             throw new ExecutionException("error showing resource in navigator"); //$NON-NLS-1$
 }

         return null;
     }

 }

